/*
 * Copyright (C) 2017 Baidu, Inc. All Rights Reserved.
 */
package com.example.administrator.yanfoxconn.utils;

import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.media.ExifInterface;
import android.net.Uri;
import android.os.Environment;
import android.text.TextUtils;
import android.util.Log;

import java.io.BufferedOutputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

public class FileUtil {

    private static String filepath = Environment.getExternalStorageDirectory() + File.separator + "YanFoxconn" + File.separator + "Photos" + File.separator;
    private static String filepath2 = Environment.getExternalStorageDirectory() + File.separator + "Pictures" + File.separator + "YanFoxconn" + File.separator;

    public static File getSaveFile(Context context) {
        File file = new File(context.getFilesDir(), "pic.jpg");
        return file;
    }

    //删除文件夹和文件夹里面的文件
    public static void deleteDir(final String pPath,Context mcontext) {

        File dir = new File(pPath);
        deleteDirWihtFile(dir,mcontext);
    }

    //删除文件
    public static void deleteDirWihtFile(File dir,Context mcontext) {
        if (dir == null || !dir.exists() || !dir.isDirectory())
            return;
        for (File file : dir.listFiles()) {
            if (file.isFile()){
                String pathfile = file.getAbsolutePath();
                file.delete(); // 删除所有文件
                Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
                Uri uri = Uri.fromFile(new File(pathfile));
                intent.setData(uri);
                mcontext.sendBroadcast(intent);
                //这个广播的目的就是更新图库，发了这个广播进入相册就可以找到你保存的图片了！，记得要传你更新的file哦
            }
            else if (file.isDirectory())
                deleteDirWihtFile(file,mcontext); // 递规的方式删除文件夹
        }
        dir.delete();// 删除目录本身
    }
    //删除文件夹和文件夹里面的文件
    public static void deleteDir(final String pPath) {
        File dir = new File(pPath);
        deleteDirWihtFile(dir);
    }

    public static void deleteDirWihtFile(File dir) {
        if (dir == null || !dir.exists() || !dir.isDirectory())
            return;
        for (File file : dir.listFiles()) {
            if (file.isFile())
                file.delete(); // 删除所有文件
            else if (file.isDirectory())
                deleteDirWihtFile(file); // 递规的方式删除文件夹
        }
        dir.delete();// 删除目录本身
    }

    //上傳完删除圖片Photos
    public static void deletePhotos(Context mcontext) {
        //刪除壓縮圖片
        File dir = new File(filepath);
        deleteDirWihtFile(dir,mcontext);
        //刪除拍照圖片
        File dir2 = new File(filepath2);
        deleteDirWihtFile(dir2,mcontext);
    }


    /**
     * 把图片压缩到200K
     *
     * @param oldpath
     *      压缩前的图片路径
     * @param newPath
     *      压缩后的图片路径
     * @return
     */
    public static File compressFile(String oldpath, String newPath) {
        Bitmap compressBitmap = FileUtil.decodeFile(oldpath);
        Bitmap newBitmap = ratingImage(oldpath, compressBitmap);
        ByteArrayOutputStream os = new ByteArrayOutputStream();
        newBitmap.compress(Bitmap.CompressFormat.PNG, 100, os);
        byte[] bytes = os.toByteArray();

        File file = null ;
        try {
            file = FileUtil.getFileFromBytes(bytes, newPath);
        } catch (Exception e) {
            e.printStackTrace();
        }finally{
            if(newBitmap != null ){
                if(!newBitmap.isRecycled()){
                    newBitmap.recycle();
                }
                newBitmap = null;
            }
            if(compressBitmap != null ){
                if(!compressBitmap.isRecycled()){
                    compressBitmap.recycle();
                }
                compressBitmap = null;
            }
        }
        return file;
    }

    private static Bitmap ratingImage(String filePath,Bitmap bitmap){
        int degree = readPictureDegree(filePath);
        return rotaingImageView(degree, bitmap);
    }

    /**
     * 旋转图片
     * @param angle
     * @param bitmap
     * @return Bitmap
     */
    public static Bitmap rotaingImageView(int angle , Bitmap bitmap) {
        //旋转图片 动作
        Matrix matrix = new Matrix();;
        matrix.postRotate(angle);
        System.out.println("angle2=" + angle);
        // 创建新的图片
        Bitmap resizedBitmap = Bitmap.createBitmap(bitmap, 0, 0,
                bitmap.getWidth(), bitmap.getHeight(), matrix, true);
        return resizedBitmap;
    }

    /**
     * 读取图片属性：旋转的角度
     * @param path 图片绝对路径
     * @return degree旋转的角度
     */
    public static int readPictureDegree(String path) {
        int degree = 0;
        try {
            ExifInterface exifInterface = new ExifInterface(path);
            int orientation = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
            switch (orientation) {
                case ExifInterface.ORIENTATION_ROTATE_90:
                    degree = 90;
                    break;
                case ExifInterface.ORIENTATION_ROTATE_180:
                    degree = 180;
                    break;
                case ExifInterface.ORIENTATION_ROTATE_270:
                    degree = 270;
                    break;
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return degree;
    }

    /**
     * 把字节数组保存为一个文件
     *
     * @param b
     * @param outputFile
     * @return
     */
    public static File getFileFromBytes(byte[] b, String outputFile) {
        File ret = null;
        BufferedOutputStream stream = null;
        try {
            ret = new File(outputFile);
            FileOutputStream fstream = new FileOutputStream(ret);
            stream = new BufferedOutputStream(fstream);
            stream.write(b);
        } catch (Exception e) {
            // log.error("helper:get file from byte process error!");
            e.printStackTrace();
        } finally {
            if (stream != null) {
                try {
                    stream.close();
                } catch (IOException e) {
                    // log.error("helper:get file from byte process error!");
                    e.printStackTrace();
                }
            }
        }
        return ret;
    }

    /**
     * 图片压缩
     *
     * @param fPath
     * @return
     */
    public static Bitmap decodeFile(String fPath) {
        BitmapFactory.Options opts = new BitmapFactory.Options();
        opts.inJustDecodeBounds = true;
        opts.inDither = false; // Disable Dithering mode
        opts.inPurgeable = true; // Tell to gc that whether it needs free
        opts.inInputShareable = true; // Which kind of reference will be used to
        BitmapFactory.decodeFile(fPath, opts);
        final int REQUIRED_SIZE = 400;
        int scale = 1;
        if (opts.outHeight > REQUIRED_SIZE || opts.outWidth > REQUIRED_SIZE) {
            final int heightRatio = Math.round((float) opts.outHeight
                    / (float) REQUIRED_SIZE);
            final int widthRatio = Math.round((float) opts.outWidth
                    / (float) REQUIRED_SIZE);
            scale = heightRatio < widthRatio ? heightRatio : widthRatio;//
        }
        Log.i("scale", "scal ="+ scale);
        opts.inJustDecodeBounds = false;
        opts.inSampleSize = scale;
        Bitmap bm = BitmapFactory.decodeFile(fPath, opts).copy(Bitmap.Config.ARGB_8888, false);
        return bm;
    }



    /**
     * 创建目录
     * @param path
     */
    public static void setMkdir(String path)
    {
        File file = new File(path);
        if(!file.exists())
        {
            file.mkdirs();
            Log.e("file", "目录不存在 创建目录  ");
        }else{
            Log.e("file", "目录存在");
        }
    }

    /**
     * 获取目录名称
     * @param url
     * @return FileName
     */
    public static String getFileName(String url)
    {
        int lastIndexStart = url.lastIndexOf("/");
        if(lastIndexStart!=-1)
        {
            return url.substring(lastIndexStart+1, url.length());
        }else{
            return null;
        }
    }

    /**
     * 删除该目录下的文件
     *
     * @param path
     */
    public static void delFile(String path) {
        if (!TextUtils.isEmpty(path)) {
            File file = new File(path);
            if (file.exists()) {
                file.delete();
            }
        }
    }


}
